Home / 20,548,135.35-28,345,676.07-12,705,140.50

Finding the Fourth Proportional to 20,548,135.35, 28,345,676.07 and 12,705,140.50

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Solution

The fourth proportional to 20,548,135.35, 28,345,676.07 and 12,705,140.50 is: 17,526,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548,135.35 : 28,345,676.07 = 12,705,140.50 : x
  2. Step 2: Convert to fraction form
    20,548,135.35/28,345,676.07 = 12,705,140.50/x
  3. Step 3: Cross multiply
    20,548,135.35x = 28,345,676.07 × 12,705,140.50
  4. Step 4: Simplify right side
    20,548,135.35x = 360,135,797,036,837.81
  5. Step 5: Solve for x
    x = 360,135,797,036,837.81/20,548,135.35
  6. Step 6: Final answer
    x = 17,526,446.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.